Results 61 to 70 of about 318 (138)

A Novel Azimuth Doppler Signal Reconstruction Approach for the GEO-LEO Bi-Static Multi-Channel HRWS SAR System

IEEE Access, 2019
For the geosynchronous-low earth orbit (GEO-LEO) bi-static multi-channel high-resolution and wide-swath synthetic aperture radar (HRWS SAR) system, a novel azimuth Doppler signal reconstruction algorithm is developed based on an equivalent baseline ...
Shuang-Xi Zhang, Shaojie Li, Yanyang Liu, Meng-Dao Xing, Junli Chen   +4 more
doaj   +1 more source

Mitigation of Suppressive Interference in AMPC SAR Based on Digital Beamforming

Remote Sensing
Multichannel Synthetic Aperture Radar (MC-SAR) systems, such as Azimuth Multi-Phase Centre (AMPC) SAR, provide an effective solution for achieving high-resolution wide-swath (HRWS) imaging by reducing the pulse repetition frequency (PRF) to increase the ...
Zhipeng Xiao, Feng He, Zaoyu Sun, Zehua Zhang   +3 more
doaj   +1 more source

An Improved Imaging Algorithm for HRWS Space-Borne SAR Data Processing Based on CVPRI

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023
In space-borne synthetic aperture radar (SAR), the sliding spotlight mode can acquire images with both high-resolution and wide-swath in azimuth direction.
Yanan Guo, Pengbo Wang, Xinkai Zhou, Tao He, Jie Chen   +4 more
doaj   +1 more source

Simultaneous High-Resolution Wide-Swath SAR Imaging and Ground Moving Target Indication: Processing Approaches and System Concepts

, 2015
In this paper a novel method for enabling ground moving target capability for high-resolution wide-swath (HRWS) Synthetic Aperture Radar (SAR) systems is presented.
Baumgartner, Stefan V., Krieger, Gerhard
core   +1 more source

Smart Multi-Aperture Radar Techniques for Spaceborne Remote Sensing [PDF]

, 2008
Data compression is crucial for modern synthetic aperture radar systems where high resolution or large coverage may result in huge amounts of raw data.
Bordoni, Federica, Federica Bordoni, Nicolas Gebert, Younis, Marwan, Gebert, Nicolas, Krieger, Gerhard, Marwan Younis, Gerhard Krieger   +7 more
core   +1 more source

A Novel Error Correction Method for Airborne HRWS SAR Based on Azimuth-Variant Attitude and Range-Variant Doppler Domain Pattern

Remote Sensing
In high-resolution and wide-swath (HRWS) synthetic aperture radar (SAR) imaging, the azimuth multi-channel technique effectively suppresses azimuth ambiguity, serving as a reliable approach for achieving wide-swath imaging.
Yihao Xu, Fubo Zhang, Longyong Chen, Yangliang Wan, Tao Jiang   +4 more
doaj   +1 more source

A Novel Antibarrage Jamming Method for Multichannel SAR Systems Using Correlation Filtering

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
High-resolution wide-swath (HRWS) imaging in azimuth multichannel synthetic aperture radar (MC-SAR) is critical for remote sensing, yet electromagnetic jamming severely degrades image quality.
Hongtao Zhan, Shuangxi Zhang, Jin Min, Shaojie Li, Yan Feng, Shaohui Mei   +5 more
doaj   +1 more source

Signal reconstruction with range migration correction for high-resolution wide-swath SAR systems

, 2022
S.110-113This paper addresses signal processing for high-resolution wide-swath (HRWS) synthetic aperture radar (SAR) systems which operate with a high signal bandwidth and/or large antenna beamwidths.
Cerutti-Maori, D., Sikaneta, I., Gierull, C., Klare, J.   +3 more
core  

A Robust Minimum-Entropy-Based Time-Domain Algorithm for Azimuth Multichannel HRWS SAR Imaging

IEEE Access
Azimuth multichannel (AMC) synthetic aperture radar (SAR) system, utilizing digital beam forming (DBF) processing, is capable of achieving high-resolution and wide-swath (HRWS) focusing, presenting significant potential for Earth observation ...
Yuekun Wang, Long Zhuang
doaj   +1 more source

High-Precision HRWS SAR Phase Error Estimation with Inaccurate Baseline: A Joint-Pixel-Based Image Subspace Approach

Remote Sensing
HRWS (high resolution and wide swath, HRWS) SAR always suffers channel phase error in the multichannel reconstruction stage and results in a lower imaging quality. The image domain error estimation method can achieve superior performance by utilizing the
Jixia Fan, Quan Chen, Jixiang Xiang, Xiaojie Ding, Wenxin Zhao, Guangcai Sun   +5 more
doaj   +1 more source